Granted Patent
Utility
US 5,535,784 · App. 08/269,191
Aircraft waste system drain valve
Inventors:
Eric J. Saville, Raymond S. Hunt, Jr., William Dunn
Patented Case
View Patent ↗
Granted: Jul 16, 1996
Filed: Jun 30, 1994
Inventors
Eric J. Saville
Raymond S. Hunt, Jr.
William Dunn
Assignee (at issue)
Pneu-Draulics, Inc.
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.